Hamcrest is based on the concept of a matcher, which can be a very natural way of asserting whether or not the result of a test is in a desired state. If you have not used Hamcrest, examples in this ...

JUnit, a simple testing framework created by Kent Beck and Erich Gamma during a long airplane trip a few years ago, ushered in a new era of developer testing. A cottage industry grew up around "*Unit" ...